EP 0099588 A2 19840201 - Method of regenerating cation exchange membrane.
Title (en)
Method of regenerating cation exchange membrane.
Title (de)
Verfahren zur Regenerierung von Kationenaustauschermembranen.
Title (fr)
Méthode de régénération de membranes échangeuses de cations.
Publication
Application
Priority
JP 12772982 A 19820723
Abstract (en)
A method for regenerating a perfluorinated cation exchange polymer membrane which can give only a low current efficiency as a result of being used as a diaphragm in an electrolytic cell or an electrodialyzer, said method comprising maintaining said perfluorinated cation exchange polymer membrane at a temperature of at least 110°C while keeping it in contact with an aqueous solution of a strong acid having a pH at ordinary temperature of not more than 1.0.
IPC 1-7
IPC 8 full level
B01D 61/52 (2006.01); B01D 65/06 (2006.01); B01J 49/00 (2006.01); C08J 5/22 (2006.01); C25B 15/00 (2006.01)
CPC (source: EP US)
C08J 5/2293 (2013.01 - EP US); C08J 2327/12 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0099588 A2 19840201; EP 0099588 A3 19851204; EP 0099588 B1 19871014; CA 1208867 A 19860805; DE 3374075 D1 19871119; JP S5920482 A 19840202; JP S607942 B2 19850228; US 4526904 A 19850702
DOCDB simple family (application)
EP 83107203 A 19830722; CA 432461 A 19830714; DE 3374075 T 19830722; JP 12772982 A 19820723; US 51402283 A 19830715